Chipotle Mexican Grill says it has removed jalapeños from some of its restaurants after determining the peppers could potentially be tied to a salmonella outbreak public health officials are investigating. The company said Tuesday that it had pulled the jalapeños out of an abundance of caution and replaced them with product from different growers. The Minnesota Department of Health confirmed the outbreak is tied to several Mexican-style quick-service restaurants, with jalapeños suspected as the source. Officials identified 110 cases in Minnesota, with Chipotle involved in most. The Minnesota Department of Health said the Food and Drug Administration is conducting a traceback probe.

State health officials say two people have died in the cyclospora outbreak in Michigan. They are the first confirmed deaths in the U.S. related to the microscopic parasite. The Michigan Department of Health and Human Services said Monday that both had underlying health conditions that may have been impacted by the intestinal illness and dehydration. The Centers for Disease Control and Prevention says cyclospora is a microscopic, spherical parasite that commonly causes watery diarrhea “with frequent and sometimes explosive bowel movements,” The parasite spreads through feces. In the past, people have been infected by consuming fruits or vegetables that were exposed to contaminated irrigation water.

It’s been a choppy year for restaurants that lean into lettuce.

Many people throw away food based on confusing expiration labels like “Best By” or “Sell By.” Experts say these labels often indicate freshness, not safety. California is addressing this by requiring two standardized labels for quality and safety. A 2019 study found over 80% of consumers discard food near the date on the label. Foods like canned goods and dry items can last beyond these dates. The only federally required expiration date is for infant formula, which should not be consumed past its date because of a decline in nutrients. In general, people should use their own judgment and look for signs like mold, strange odors and unusual colors to decide whether or not to toss out food.

Federal health officials have linked four more states to an outbreak of a diarrhea-causing parasite. The update announced Friday expands the scope of the largest U.S. outbreak of cyclospora on record. Federal health agencies have been investigating the outbreak tied to shredded lettuce served at Taco Bell restaurants. Their tracing efforts now include Illinois, Kansas, Oklahoma, and Pennsylvania. Previously the agency’s investigation included five states: Indiana, Kentucky, Michigan, Ohio and West Virginia. Investigators are focused on produce supplier Taylor Farms and imports of lettuce from a location in Mexico.

Federal health officials have remained focused on lettuce from Taylor Farms as the source of a multistate outbreak despite inaccurate test results reported over the weekend. Food and Drug Administration officials on Monday briefed reporters on how the government erroneously reported a direct link between a sample of lettuce from Taylor Farms and the parasite that causes severe diarrhea. Officials said the false positive result came from a rapid, molecular test used to screen incoming lettuce from Mexico at the border. While the FDA reported the link Saturday, officials said a subsequent quality check found the result was a false positive.

Taylor Farms has expanded a voluntary recall of its iceberg lettuce products sourced from central Mexico because of a potential link to the multistate cyclospora outbreak that has sickened people across the U.S. The California-based company said products with the potential to be contaminated with the diarrhea-causing parasite were shipped to 27 states including Texas, Florida, Pennsylvania and Illinois. Cyclospora is a microscopic parasite that infects food that has come into contact with human feces, most commonly when produce is irrigated or washed with contaminated water. U.S. health officials earlier this week identified lettuce from a supplier in Mexico as a source of cyclospora contamination in food served at Taco Bell restaurants in five Midwestern states.

Federal health officials have identified lettuce from Mexico served by Taco Bell locations across five U.S. states as a source of the widespread outbreak of diarrhea-causing parasite cyclospora. The Centers for Disease Control and Prevention late Thursday confirmed the source and warned consumers not to eat shredded iceberg lettuce from Taco Bell restaurants in Indiana, Kentucky, Michigan, Ohio and West Virginia. Officials have identified a single supplier of the lettuce. The federal warnings to consumers did not identify the company, but Taylor Fresh Foods, of Salinas, California, said FDA testing indicated it was “a specific independent farm” affiliated with the company.

Big U.S. restaurant chains don’t get linked to foodborne illness outbreaks often. But the number of meals they serve causes a lot of concern when contamination of some kind sickens customers. Federal health officials have identified iceberg lettuce from Mexico served at Taco Bell locations in five states as a source of widespread infections from the diarrhea-causing parasite cyclospora. Cases have been reported in more than 30 states. Other recent outbreaks at Chipotle, McDonald's, Wendy's, Jack in the Box and Taco Bell roiled the restaurant companies and sometimes changed how food safety is regulated in the U.S.